Electrical connection for electric relays.



C. SULLE.

ELECTRICAL CONNECTION FOR ELECTRIC RELAYS.

APPLlcATloN FILED MAK.2|,19I4.

1,160.54?. Patented Nov. 16, m15.

CURT STILLE, 0F ZEHLENDORF-WEST, NEAR BERLINGEBJMANY.

ELECTRICAL CONNECTION FOR ELECTRIC BELAYS.

Specification of Letters Patent.

Patented Nov.. i6, MM5.

AppIication filed March 21, 1914. Serial No. 626,321.

To all whom t may concern.'

Be it known that l, CURT STILLE, doctor of philosophy, of Zehlendorf-VVest, near Berlin, Germany, a subjectof theKing of Prussia, and whose post-odio@ address is 4,/5 Blowstrasse, Zehlendorf-lesa near Berlin, Kingdom of Prussia, German Empire, have invented a new and 'useful improved Electrical Connection for Electric Relays.l of which'the following is a specification.

Electric relays ,have already been proposed in which two oppositely rotating coils compress or release a microphonic contact, according to whether the current is directed in the one or the other direction. A special construction of such relays has also been suggested in which the microphone contacts are not located between the two coils, but on the contrary are pressed by arms secured on the coils, while the microphone themselves are iXed. According tothe present invention an improved arrangement of electrical connection is provided for such relays by which sounds, especially sibilants, are repeated with greater clearness.

In the improved arrangement the coils are preferably of different resistances, the one for example having 200, the other l0 ohms resistance, and each coil carries an arm for each microphone.

In the accompanying drawing Figure l is a diagrammaticview of a relay and the microphones employed in carrying out ithe invention. Fig. 2 is a diagram of the electrical connections of the elements of the invention, the coils being illustrated in this ligure separatedfrom each other for greater clearness.

With reference to Fig. l, P and S are the v.primary ,and secondary coils of the relay suspended by means yof hooks()1 C, C11 C21 and threadsor'y stringsE, EZEa E, attached to the lcoils. Mounted on the primary coil are four arms E, F, F3 F, with corresponding contact lpieces D, I), l)3 D4 pressing against corresponding contact pieces on the microphones Ai, A, A, A4, corresponding arms and Contact:` pieces being also-provided forthe secondaryvcoil ,S Electrical conductors L, L, andVM,L M2 are attached to the ends of the coils P and S. p

The electric connections are shown in Fig.

2; only a single microphone A. is shown,

while a's mentioned before in practice, onaccount ofi, symmetry, four such microphones are i preferably employed.

The primary coil P is secured directly to the conductor, that is at L1 and L2 as shown in Fig. l. From a secondary coil S two conductors Ml, M2 lead,l and are connected to the hearing or receiver' apparatus, a tele phone H for example. The conductors M1 and M2 are branched andthe battery B and the microphone A are connected in parallel with the receivenHH. rlhe microphone 'is subjected to variations in pressure from the two contacts D1, d1 carried by the two coils P and S.

The operation of the apparatus is as follows :-In the receiving apparatus H` are rst of all eiiective those currents which are directly produced by the coil S. Superposed on these currents, however, are the currents from the battery B, which as a result of the mechanical forces exercised by the coils P and S become influenced in their intensity by the resistance of the microphone A.. For insuring effectual working, conformity in the phase of these two currents, which obviously follow the same oscillations, should apparently be considered. It appears, however, that even if such conformity in phase is not present, there is a favorable induence for repeating the vibrations, as both apparatus have the tendency, in a. similar manner to two alternating current machines connected in parallel,'of synchronizing, that is bringing about an elimination of the difference in phase.

What l do claim as my invention, and de-.

sire to secure by Letters Patent of the United States, is:

1. A microphone relay device comprising a microphone, suspended primary and seconder-y coils movable against each other, the

, microphone being subjected to pressure from said coils, a circuit including said secondary coil, a battery and sald microphone, and a hearmg device connected across to said circuit.

from said coils, a circuit including said sec- 105.

ondary coil, a battery and ,said microphone,

circuit.

In a micropboneirelaypa iprimarycoil, e, secondary 0911,, arms carried ,by said co1ls,a

loe

, and a hearing device connected across to said angesehenenniet.

receiver to which said microsecondary coil are both conarms and e, phone and nected.

4. ln a microphone relay, a primary coil, a secondary coil, a microphone influenced by the relative movement of said coils and a. telephone .receiver to which said microphone and secondary coil are both connected.

5. A ,microphone relay device comprising a microphone, suspended primary and secondary coils movable against each other, and arms carried by said coils; the microphone being subjected to pressure from said coils, e circuit. including said secondary coil, e heb tery and said microphone, and a hearing device connected across to said circuit.

Lissone-7 6. if; microphone relay device comprising a microphone and suspended primary and secondary coils rotatable against each other, arms carried by said coils, thc microphone being subjected to' pressure from said coils,`

a circ-uilI including said secondary coil, a battery and said microphone, and a hearinb` device connected across to said circuit.'

ln testimony whereof l have hereunto set my hand in presence of two subscribing Witnesses.

GUET STILLE. y

Witnesses HENRY HAsrnn, VOLDEMAR HAUPT. 

